674 INDEX 



Phosphatic slag, estimation of total phosphoric acid, alternate method 198 



German manufacturer's method of analysis 217 



relative availability 197 



sifting 197 



solubility 196 



solution 197 



1 'hosphomolybdate, direct weighing 122 



precipitate, direct weighing, Berju's method 125 



Cladding's modification 130 



method of Graftiau 127, 128 



Hanamann .... 122 

 Hundeshagen 123-126 



Lorenz 123 



Pellet 129 



Sherman and Hyde 125 



Woy 124 



Neumann's method 125 



Phosphoric acid absorption 284 



amount removed by crops 46 



and nitrogen, determination in the same solution 87, 88 



citrate-soluble 185, 186 



comparison of different methods of estimation 212 



conduct of the volumetric method 160 



determination 620 



Albert method 180 



ammonio-manganous method 15 ' 



Brussels Congress method 99. 100 



citrate method 88, 89, 90, 182 



for small amounts 105 



French official method 72. 73 



general method 55 



German experiment station method 68 



fertilizer Association method 246 



in all phosphates 184 



ash 614, 615 



basic slags 184 



by the Halle station methods 199 



by Wagner's method 201 



direct and molybdate method.. 213 

 precipitation method 



comments 208 



excess of iron 167 



slags 214 



superphosphates 186 



influence of aluminum 83, 84, 85, 86 



calcium and magnesium.. 83-86 



calcium 83, 84, 85, 86 



magnesium 83, 84, 85, 86 



silica 60 



tartaric acid . 60 



international method 66 



International Steel Standard Committee method 173 



Jensch method 220 



molybdate method 181 



molybdic method of the German experiment 



stations 70, 71 



Norwegian method 68, 69, 70 



